Companies look for a good performance in all exercises during the day, with a very good performance in a couple to make you stand out. They look for different things in their group exercises: almost all say they want candidates to show good ideas and communication skills without dominating the group. However some will be looking more for leadership, others more for team-working. Some are happy with lip-service to "tick the box" of consultation and team-working, but ultimately reward those who steamroller their ideas through. Others reward candidates who facilitate the discussion even if they don't bring up any original ideas in the discussion. It depends on the culture of the organisation and the type of role you're applying to.A company engaged in a lot of outsourcing (e.g. EDS) may be going looking for someone who is capable of giving clear directive instructions to a large, not necessarily highly educated group. A company engaged in a lot of market research (e.g. Corporate Executive Board) may be looking for someone who can take on board briefing information as well as explaining their own ideas clearly.